Motion picture camera spool



Mo'r'ioN PICTURE CAMERA srooL Fil e'ii" June 15, 1944 4/ Inventor I Prz' n)z a'va/ZZ&'

M Attorneys Patented July 31, 1945 UNITED S TATES PATENT- OFFICE- MOTION ma azines sroor. I I

Sam N. I; Application June 15, 1944, Serial No. 840,419

The present invention relates to new and useful improvements in spools for motion picture cameras and has for its primary object to provide means for preventing the improper mounting of the spool on the idler spindle of the camera so that the user is prevented irom accidentally exposingthewrongsideoithenlm.

A further object of the'lnventlon is to provide a spool structure which may be economically manuiactured-and at the same time is eillcimt.

- .and reliable in use, and otherwise well adapted for the purposes for which the same is intended.

Gther objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed. reference beconnectedbythehubportionlintheusualman ner.

(Cl. 242-70) In order to properly position the spool on the spindle the-opening I in the flange l is flrst placed on the end of the spindle. the lugs ll entering the spaces between the lugs I, the flanges is forming a stop to prevent further movement or the spool onto the spindle. The

spool is then partially rotated toallgn the flanges II with the spaces between the l gs 8 and the spool may then be moved completely onto the, 10 spindle.

It is believed that the details of construction andmanneroiuseoithedevieewillbereadily' understood from the ioregoing without iurther detailed explanation. v

Having described the invention, what is claimed asnewisr l. A spool for motion picture camera illm includingav ir ispacedflangesandahubpon tion connecting the flanges, said spool being adapted for mounting on a spindle provided with cireumierentially spaced lugs, said flanges having openings ior receiving the spindle, a plurality of lugs on one flange projecting inwardly oi the opening at the flange manuaoi lugs on said flange proiec thereoi, said lugs on said flange being adapted for successive insertion through the spaces between the lugs oi the'spindle for mounting the Thespool is sesigned oimounting on a spindle 85 9}, ml the spindle a M rotation of t liormingpartoitheconventionalcamersconiii-mum, the tree end of the spindle having a plurality of circumierentially spaced, radially extending lugs I. Inch flange oi. the spool is termed with a cen-- 'traiopeningi' andl'respectivelyallgnedwith opening-t being adapted to receive.

thehub. the the outer end of the spindle, the lugs 8 prevents inginsertionoitheilangelbeyond the'lugs.

Theopening oitheilangeiisiormedwitha pairotradiallyextendinglugsll intheplaneot the flange and a pair or axiallyextending lugs i2 extending inwardly or the hub oitbe spool and having angularly iorined flanges ll thereon extending radially inwardly with-respect to the cpeningi'.asshowninligure3.

2. A spool for motion picture camera film comprlsingspaced flanges connected by a hub portion. said flanges having aligned central open ings therein adapted for receiving a spindle for mounting the spool thereon. said spindle having circumierentiallv spacedlugs and lugs carried at the edges oi once! said "openings and adapted for successively entering the spaces bea tween the lugs of the spindle, certain oi-said lugs 01 the spool being positioned axially behind the remaining lugs and onset from the spaces between the lugs 01 the spindle when said r 7 lugs are aligned with said spaces, said first named w r im eing a pted to enter said spaces bya Partial rotation oi the spool on the spindle.

8AM PRINZIVALH.

, i'rom the edge of said opening inwardly oi the hub and having radially inwardly extending flanges on the ends 

